Forked from:: miyaoka's LifeShooter

forked from: LifeShooter

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license : All rights reserved
modified : 2009-02-01 18:31:55

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// forked from miyaoka's LifeShooter
// forked from psyark's forked from: convolution_life
// forked from hacker_3szp8277's convolution_life
//　自機は想像で補ってください。または補ってください。
package  
{
	import flash.display.*;
	import flash.filters.ConvolutionFilter;
	import flash.events.*;
	import flash.geom.*;
	[SWF(width="465", height="465", backgroundColor= 0x000033, frameRate="60")]
	public class LifeShooter
	extends Sprite
	{
		private var pixelScale:Number = 1 + Math.random()*4;
		private var scrollHeight:int = 4;
		private var scrollFrame:int = 120;
		private var lifeBD:BitmapData = new BitmapData(stage.stageWidth * 0.75 / pixelScale, stage.stageHeight / pixelScale + scrollHeight * pixelScale, false, 0x000000);
		private var lifeBmp:Bitmap = new Bitmap(lifeBD);
		private var field:Sprite = new Sprite();
		private var step:ConvolutionFilter = new ConvolutionFilter(3, 3, [1, 1, 1, 1, 9, 1, 1, 1, 1], 0xFF, 0);
		private var rule:Array = [0, 0, 0, 0xFF0000, 0, 0, 0, 0, 0, 0, 0, 0xFF0000, 0xFF0000];// 0xFF0000];
		private var scrollWaitFrames:uint = 0;
		private var mouseHold:uint = 0;
		public function LifeShooter() 
		{
			field.addChild(lifeBmp);
			field.scaleX = field.scaleY = pixelScale;
			addChild(field);
			field.x = (stage.stageWidth - field.width)/2
			lifeBmp.y = -scrollHeight;
			lifeBD.pixelDissolve(lifeBD, new Rectangle(0,0,lifeBD.width, lifeBD.height * 0.1), lifeBD.rect.topLeft, Math.floor(Math.random() * int.MAX_VALUE), lifeBD.width*lifeBD.height /10, 0xFFFF0000);			
			field.addEventListener(MouseEvent.MOUSE_DOWN, function (mEvt:MouseEvent):void { mouseHold = 2 });
			stage.addEventListener(MouseEvent.MOUSE_UP, function ():void { mouseHold = 0 });
			addEventListener(Event.ENTER_FRAME, enterFrameHandler);
		}
		private function enterFrameHandler(evt:Event):void 
		{
			if (mouseHold)
			{
				if(mouseHold++ % 2 == 0)
				{
					var bullet:Sprite = new Sprite;
					bullet.graphics.beginFill(0xFF0000);
					var bulletSize:Number =  Math.min(10, 2 +mouseHold / 10);
					bullet.graphics.drawRect(-bulletSize / 2, -1/2, bulletSize, 1);
					bullet.x = field.mouseX; 
					bullet.y = field.mouseY;
					field.addChild(bullet);
					bullet.addEventListener(Event.ENTER_FRAME, bulletEnterFrameHandler, false, 0, true);
				}
			}
			lifeBD.lock();
			lifeBD.applyFilter(lifeBD, lifeBD.rect, lifeBD.rect.topLeft, step);
			lifeBD.paletteMap(lifeBD, lifeBD.rect, lifeBD.rect.topLeft, rule);
			lifeBmp.y = -scrollHeight + scrollHeight  * scrollWaitFrames / scrollFrame			
			if (++scrollWaitFrames % scrollFrame == 0)
			{
				lifeBmp.y = -scrollHeight;
				scrollWaitFrames = 0;
				lifeBD.scroll(0, scrollHeight);
				lifeBD.fillRect(new Rectangle(0, 0, lifeBD.width, scrollHeight), 0xFF000000);
				lifeBD.pixelDissolve(lifeBD, new Rectangle(0, 0, lifeBD.width, scrollHeight), lifeBD.rect.topLeft, Math.floor(Math.random() * int.MAX_VALUE), lifeBD.width * scrollHeight / 2, 0xFFFF0000);			
			}
			lifeBD.unlock();
		}
		private function bulletEnterFrameHandler(evt:Event):void 
		{
			var bullet:Sprite = evt.target as Sprite;
			bullet.y -= bullet.height * 2;
			if (bullet.height / 2 >= bullet.y)
			{
				bullet.removeEventListener(Event.ENTER_FRAME, bulletEnterFrameHandler);
				field.removeChild(bullet);
				return;
			}
			var bd:BitmapData = new BitmapData(Math.floor(bullet.width + 2), Math.floor(bullet.height + 2));
			bd.copyPixels(lifeBD, new Rectangle(Math.floor(bullet.x - bullet.width /2), Math.floor(bullet.y-bullet.height/2), bd.width, bd.height), bd.rect.topLeft);
			if (bd.compare( new BitmapData(bd.width, bd.height, true, 0xFF000000) ) != 0)
			{
				bullet.removeEventListener(Event.ENTER_FRAME, bulletEnterFrameHandler);
				lifeBD.draw(bullet, new Matrix(1, 0, 0, 1, bullet.x , bullet.y));
				field.removeChild(bullet);
			}
		}
	}
}

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